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Figure 8 Bone morphogenetic protein (BMP)4 regulates the interleukin (IL)-7alpha/CD127 signaling pathway in intestinal epithelial cells (IECs) and intraepithelial lymphocytes (IELs). (A) Western blot analysis determined the expression of IL-7 in IEC-6 cells following treatment with BMP4 for 6 h. The IL-7 level was significantly decreased compared with that in the control group. (B) Flow cytometry, was used to detect the expression of CD127 and phosphorylated signal transducer and activator of transcription (STAT)5 proteins following treatment with BMP4 for 6 h. The levels of CD127 and phosphorylated STAT5 proteins were significantly decreased compared with those in the control group. Each experiment was repeated three times; 4-5 mice/group. * P<0.05 for control vs. treatment with BMP4 alone; ** P<0.05 for control vs. the BMP4 + NOGGIN group. GAPDH, glyceraldehyde 3-phosphate dehydrogenase.

Product Specific Information

Description: The A7R34 monoclonal antibody reacts with mouse CD127, the high affinity alpha subunit of the mouse IL-7 receptor. IL-7 receptor alpha chain is expressed by immature B cells in the bone marrow, double-negative (CD4-CD8-), single-positive (CD4+ and CD8+), but not double-positive (CD4+CD8+) thymocytes. In the periphery, mature T cells express CD127 at low level. A7R34 inhibits binding of IL-7 to its receptor and has been used in in vivo and in vitro studies to elucidate the role of IL-7 in T and B cell development and activation. Binding of A7R34 blocks the binding of SB/199, another antibody which recognizes mouse CD127.

Applications Reported: The A7R34 antibody has been reported for use in flow cytometric analysis.

Applications Tested: The A7R34 antibody has been tested by flow cytometric analysis of mouse thymocytes and splenocytes. This can be used at less than or equal to 0.25 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.

Target Information

CD127 (Interleukin-7, IL-7) is a glycoprotein involved in the regulation of lymphopoiesis. The response of cells to CD127 is dependent on the presence of the interleukin 7 receptor (IL7R); the active receptor is an alpha/gamma chain heterodimer. CD127 consists of an alpha chain and a gamma chain. The gamma(c) chain, which also associates with the interleukin-2 receptor, serves primarily to activate signal transduction by the IL7R complex, while the alpha chain of IL7R determines specific signaling events through its association with cytoplasmic signaling molecules. CD127 promotes the proliferation of precursor B cells, thymocytes, T cell progenitors, and mature CD4+ and CD8+ T cells. The biological effects of IL7 are mediated by the binding of IL7 to the specific cell surface receptor. Diseases associated with CD127 dysfunction include severe combined immunodeficiency and T cell negative/B cell negative/NK positive severe combined immunodeficiency.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.